Inverted incandescent gas or vapor lamp.



L. LIAIS. INVBRTED INCANDBSCENT GAS 0R VAPOR LAMP.

APPLICATION FILED NOV. 36,1904.

gl. Patented 0011.20, 1908.

UNITED STATES regressie neuron.,

LUCIEN LIAIs, or PARIS', sleeve/n4 'Nm coseno.

Application filed` Notieren-efe@ im, 7s "f Torall whom it mai/y concern:

Be it lknown .thatL LUGIEN LIA1s,.engi neer, a citizen of the French Republic, residing at Paris, 19 Rue Cambon, in the Department of the Seine, France, haveinvented new and useful Improvements in Inverted Incandescent Gas or'VaporLamps, of whichL 4the followingis a lspeclfication.

This invention relates to incandescent Ivapor lamps or burners yin which mayl be used coal gas, water gas, and other vapors, andis an improvement uponthe invention patented-by me August 23rd, 1904, numbered 68,382, for incandescent gas or vapor lamps, and is adapted for use' in railway ca1scar riagej lamps, street lampsand other employments.

The 'accompanying-drawing shows a view 1n vertical v'crosssecti'on'of the burner, Figure 11,.V Fig; 2 is a view in plan of the collar, described further on'.

The whole of this arrangement consists of .I

an Vinverted burner 2, of cast aluminium `or any. other metal which is a, good heat conductor, a, icone 5 acting as a circular side reflector, a chimney l, supporting the Whole of the vburner and a flat annular reflector 1l by ymeans of screws or rivets 14. passing through vertical'anges on the i side reflector and extending into'the chimney.

At the extremity of theburner is a piece ccfA steatite 6 whose use is to prevent'the metallic part of the burner being raised to the melting point.

At the upper part'of the burner, issituated hn'ijector 31, surmounted by thegaspipe. On each side of the burner are dlsposed air inlettubes fitted with screw plugs which fitH htly to prevent them shaking loose through ration. These sto screws are hollolwed and provided with a ateral hole 4, so as to lr ate the air admission.

, he lowerpart of the 'conical 4reflector 5, is fitted with a collarofl metal, 12, securedto the refiectorby an arm 13, which collar actingas a spring is kep't closed by'means ot a thumb screw 10, passing through the two lugs 14; the objectof this collar is to hold the globe or casing 8 which is fitted to carry the lmantle 7 by arms 15. This mantle is mounted 'upon a metallicl socket which fits lintothe glass globe, sathatwwhen handled, the mantle is constantly kept free from injuries. t i

The bottom of the globe or casmg 8 1s prodrawing by the arrows.

y It will be seen thatthe hollow reliector 5 forms a portion oi" the flue through which the ,products of combustionY escape and that it alsoconstitutes an imperforate connection between the globe or casing 8 4and the chim ney l. The said reflector andcasing may thus be said to form continuatons of 4said chimney, 'as they complete thedue for the escape oi' the'tproducts ci combustion'down to and below the mantle 7. By this con'- struction a supply" or air is drawn in by suc. tion through the opening 9 in the globe or casing 8, and all of the 'products of'combus tion are 'forced to pass out through the Chilnney 1 and 'to citent a regeneration of the gas or vapor flowing to the burner 2. Besides,

the het gas or vapor, at the point o'f its'ignition at. the burner, is 'brought into intimate contact'with the mantle or filament 7, serv- ,ing .to maintain it at an even and continuous state of incal'idescence.

The advantages of the globe or casing 8 arezlf the mantle breaks through vibration ,it falls into. the globe, but as this globe is of small size, the mantle always keeps in Contact with the dame oi. the burner, so that the light shall never be completely out.` Moreover, the mantle being constantly protected by the globe, it cannot be either spoiled or brokendurlng the putting of it into its place.

Having now described my' invention what l desire to claim is L in an inverted incandescent burner, 'a depending tube, a filament supported around the lower end thereof, 'and a hollow conical reflector leading fromv the upper end of said filament and forming part of a flue through whichthe products of combustion escape.

2. in aninvertedincandescent burner, a depending burner, a .filament supported aroundv said burner, t a Vhollow conical re Hector leading from the upper end of said l filament and forming part of'a flue through vwhich the products of combustion escape,

and a transparent casing surrounding said filament and leading downwardly from the ,lower end of said reflector.

`ector leading from the upper end of'said filament and forming part of a iiueithrough Which the products of combustion fescape, and ya transparent casing surroundino' said filament and depending from the reector.

4. In an invertedncandescent burner, a I

the' lowerv end thereof, a hollow conical relHector tli ough which the products of combustion escape, and a transparent casing depending from vsaid reflector and surroundingsaid' fila-ment so as to direct the products of combustion into contact with said laf ment and through said hollowreflectpn In testimony whereof I have signed my mme to this specification in the presence of two subscribing witnesses.

LUCIEN MAIS.. Witnesses.: l

LUCIEN CREsPrNG, JOHN BAKER.- 

